Outside of social media, Republican Mike Pence of Indiana affirmed he’d be joining, as did Pete Sessions of Texas, although House Minority Leader John A. Boehner demurred. Somewhat mischievously, Bachmann even asked House Speaker Nancy Pelosi to join -- to a deafening silence.

Utah Republican Rep. Jason Chaffetz, who is considered a tea party enthusiast, tweeted that he’s out because ...

... of his suspicions that D.C. is not a particularly good place for tea partyers to look for leadership.

He tweeted: "If any one person(s) tries to co-opt it, the Tea Party will lose its identity and effectiveness. Go Tea Party! But not with DC "leadership.” He added: "Formality will be counter productive."

Bachmann tweeted on Monday the news that her request to form the caucus had been accepted by the House Administrative Committee, which was retweeted more than 100 times among her more than 8,000 Twitter followers (she also has more than 40,000 Facebook friends).

In a statement, Bachmann wrote that American voters have “had enough of the spending, bureaucracy and the government-knows-best mentality running rampant today throughout the halls of Congress.”

It remains unknown why Bachmann thinks Washington is the best place for such a group, but a high-profile move won’t do her reelection chances any harm. She faces a tough fight against Minnesota state Sen. Tarryl Clark in November.

Republicans may have found the in-or-out, with-us-or-against-us mentality a little uncomfortable, although Connecticut Democrat Jim Himes tweeted Tuesday that Democrats are facing a similar divide over government spending and perceived overreach, and he’s joined three others in a breakaway group choosing to “go rogue” like perhaps the most famous tea partyer of them all.